Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c5ad693608566a7…

MALICIOUS

PDF

33.0 KB Authoring application: Scribus
MD5: a40aef5c75e89e3cea9f0af377a34bce SHA-1: 44f38614211f500084bd7158fa325d001a2d900d SHA-256: 2c5ad693608566a74db795c2c4eb287f0b38eddd5184d7fc8dfdabccb328ae12
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique commonly used for SEO poisoning or phishing campaigns. ClamAV identified this as Pdf.Phishing.TtraffRobotInstall-7605656-0, and the ML classifier also flagged it with high confidence. The document body, though heavily obfuscated, contains text related to medical lab tests, suggesting a potential lure to disguise the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://yourself-storage-units.com/uploads/1/3/0/5/130545382/rixedegipo.pdf
    • http://dripexperience.com/uploads/1/3/0/8/130874316/bedidipenazotegabam.pdf
    • http://btbrv.com/uploads/1/3/0/6/130621310/f32c32cfa28d51.pdf
    • http://wearethepack.com/uploads/1/3/0/4/130488067/jokanas-womebisomudabo-redineni-kidemudug.pdf
    • http://danielstorage.com/uploads/1/3/0/7/130775866/momoforomewaga.pdf
    • http://fuckdoors.com/uploads/1/3/0/6/130604823/9741442.pdf
    • http://notemonkey.net/uploads/1/3/0/6/130639309/gejaze.pdf
    • http://4011sports.com/uploads/1/3/0/3/130312996/7053546.pdf
    • http://toddspectorscam.org/uploads/1/3/0/8/130814769/8156032.pdf
    • http://jessicagaul.com/uploads/1/3/0/2/130274097/kidoxuzude.pdf
    • http://mariposa.social/uploads/1/3/0/4/130488834/b8c7c1183c05.pdf
    • http://petpalspetandhomecare.com/uploads/1/3/0/6/130621803/1ce92e200a.pdf
    • http://jedrietveld.com/uploads/1/3/0/7/130776247/9847303.pdf
    • http://74-123-77-212.mgwnet.com/uploads/1/3/0/6/130620150/130620150.html#lactic+acidosis+lab+test
    • http://mariposa.social/uploads/1/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002bfc.bin
c8c81b0f5384cb19c6772fc6c6d83331316b22b032c42528e37d1432e25d289b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BFC 6588 bytes

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